Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation — Test method for slow crack growth on notched pipes seo-ignore It also specifies requirements for

It also specifies requirements for the manufacturer concerning production

1   These test methods cover the determination of water vapor transmission (WVT) of materials through which the passage of water vapor may be of importance

ISO 23920 specifies a method for the quantification of ammonia by ion chromatography in mainstream smoke using ISO 20778 smoking parameters

however for a dedicated LPG standard see EN 12493

All care should be taken to ensure that the samples are representative of the specified system

Polyolefin pipes for the conveyance of fluids — Determination of resistance to crack propagation — Test method for slow crack growth on notched pipes seo-ignore It also specifies requirements for1 Scope This International Standard specifies a test method for determining the resistance to slow crack growth of polyolefin pipes, expressed in terms of time to failure in a hydrostatic pressure test on a pipe with machined longitudinal notches in the outside surface. The test is applicable to pipes of wall thickness greater than 5 mm.